Screen jfob oil wells



Jan. 26 {1926. 1,570,725

C. H. BENCKENSTEIN SCREEN FOR OIL WELLS 7 Filed NOV. 5, 1924 Cfiarlew 11abkozmgd Patented ass. 2c, 1926.

- S H. BENCKENSTEIN, OF VIN'TON, LOUISIANA.

, scnnnn son on. wants.

a lication filed November 3, 1924. Serial no. 747,851.

To all whom it may concern: in construction, and durable and efiicientin Be it known that ii, CHARLES H. BENGK- operation.

nnsrnm, a citizen of the United States, re- The specific construction ofmy improved sidin at Vinton, in the parish of Calcas1eu screen will nowbe described reference "bea and tate of Louisiana, have invented ceriughad to the accompanying drawings in Q lain new and useful Improvementsin l which:

Screens for Oil Wells, of which the follow- Figure 1 is an elevationalview of the ing is a full, clear, and exact description. screen, theparts being broken away to more The invention relates to screens for oilclearly show the construction;

lo Wells or other deep wells, such as are com- Figure 2 is a detailperspective view of 65 monly known and are in general use for the one ofthe rings; and,

purpose of preventing the entrance of fine Figure 3 is a detailperspective view of particles of sand or the like into the well thereverse side of one of the rings. tubing, The puppgse of the presentinven-- Referring t0 the drawings IIIOIQ in detail,

tion is'to provide such a screen which posnumeral 1 nd c tes-a pipesection or cou- 7Q sesses di ti t d t i l i ov nts pling to which isscrew-threadedly attached oyer rior screens of this nature as willaptlle pipe 2, and on the lower end of this pipe weal, i ft l haveshown' screw-threadedly mounted a The type of screen which is commonly Pp p g The P Section 2 i P I employed at thepresent time consists of a 1wl h a great number of spaced per- 73 ti f i v rovidedwith perforations,forations 4. The apparatus thus far ded around thi i i wound i f scribedis old and well-known in the art and rious cross-sectional shapes. The.turns of p 8 f ms no part of the present inven wire are spaced from eachother'and after B1011! being properlymounted on the perforated Aplurality of rings 5' are mounted on'th pipe are soldered-thereto. Sucha screen is 1 f9 i e pipe Section, and the present insubject to numerousdisadvantages. I th ventlon relates to the construction of these firstplace, thescreen must be handled with rmgs and to the manner in whichthey are great care and must not be rotated, for the mounted n theperforated pipe.

7 $11) rotation thereof will destroy the wire wrap- Referring-now t0Figures 2 and 3, it Will u ping, In th ond la thg wir u t be seen thateach ring has a flat surface 6 be rather'soft and pliable in order thatit provided vYlth a plurality of upwardly inmay be mo t d on the i e dbe e f chned spacing lugs 7 The other side of each the nature of thematerial the wire is bften of the rings is bevelled or has an inclinedas ruined or' destroyed while the screen is berfa e extending from theouter periphery 90 I to waters found Eng. lowered into-the hole. In thethird to the inner periphery. When these rings place, because of thesoftness of the wire and are arranged one on top of the other on thebecause itis attached to the screen by solder pe orated pipe section itwill'be apparent it is very often affected by the 'fierent that theinclined spacing lugs of a lower in oil weils, and often rusts ring willfit against the bevelled or inclined 95 out rapidly. In the fourthplace, the soft surface of the ring next above it, whereby materialforming'the wire is frequentl cut all of the rings are properly spaced.It will by fine particles of sand in the oil. I ese also be apparentfrom an inspection of Figtwo last-mentioned troubles occur more freure 1that the gauge of the screen increases I quently than the others, forthe operators from the outer periphery toward the inner we may be ableto guard against rotating the periphery; in other words, in accordancescreen and they may be able to guard against with the structuredisclosed herein there is a injuring the screen while it is beinglowered ver narrow space between adjacent rin in into the hole, butthere is no way in which their outer periphery and a relatively arge 60they can ard' against the action of the space between them in theif-nner periphery.

waters an sands on the wire and solder. It is not essential to theinvention, but

The purpose of the resent invention is to referably mount a relativelythick ring inrovide a screen whic will be free of the icated by numeral8 at the top and bottom above and other objectionable features and ofthe series of relatively thin rings.

which will he che'apin manufacture, simple .It is not my intention tolimit the invenimproved screen will be clearly understood,

from the foregoing description, and the advantages of this screen overthose previously known will be indicated briefly below.

The rings that are adapted to surround the perforated pipe may be madeof brass, steel, or any other desired metal; and even glass might beemployed, though it might not be very practical. As stated hereinbeforethe Wire which is commonly employed must be of very soft material, butthe rings used in connection with my improved screen may be made of thehardest material and. it is thus obvious that the possibility of theirbeing Worn out or cut by sand erected on by the Waters in the well isgreatly reduced. It is also obvious that, the screen may be rotated .inthe hole Without danger .of the slightest injury to the screen. It Willalso be apparent that this type of screen is much more easily made thanthe wiredtype of screen, for in the Wired type oft screen much care mustbe exercised in, Winding the Wire about the perforated pipe andinproperly spacing the numerous turns of ire, and in welding the turnsof Wire 'toL-the erforamd pipe after they have been mounts in place.Further the screen may be lowered into the reverse Well or raisedtherefrom without the exercising of any great amount of care, for by thearrangement of rings as disclosed herein no damage will result bystriking them against the Wall of the Well or the like.

Further, the manufacture of the screen presents the greatest simplicity,for the rings may be simply stamps from sheet material or, if preferred,they may be cast; and after" the rings have been formed it is onlynecessary to slip them on to the perforated pipe While they are in aheated condition, and allow them to cool. whereby they will be shrunk onto the pipe and thus not only be 'What I claim as new and desire tosecure by Letters Fatent is:

1. A screen for Wells including a perforated pipe, a series of hardmetal rings mounted on said pipe, each ring being of unbroken--formation and means for spacing said rings, the rings being shrunk onthe perforated P PB- 2. A Well screen including a pipe havingperforations therein, a series of hard metal rings mounted on said pipe,each ring beingotunbroken formation, one side of said rings being fiatand the otherside being beveled, said ringsloeing shrunkon the pipe.

oneness n. nnnennnsrnin.

